Lamp



FIG. 1 is a view of a lamp showing my new design;

FIG. 2 is a front elevational view thereof, a read and side elevationalviews not being shown as they are mirror images of the front elevationalview;

FIG. 3 is a top plan view thereof; and,

FIG. 4 is a bottom plan view thereof.

The portions shown in broken lines form no part of the claimed design.

The ornamental design for a lamp, as shown and described.